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Relative frequencies / proportions with dplyr
Suppose I want to calculate the proportion of different values within each group. For example, using the mtcars data, how do I calculate the relative frequency of number of gears by am (automatic/manual) in one go with dplyr ?
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Build an ASCII chart of the most commonly used words in a given text [closed]
Build an ASCII chart of the most commonly used words in a given text.
59 Answers
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How to extract img src, title and alt from html using php? [duplicate]
I would like to create a page where all images which reside on my website are listed with title and alternative representation.
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Getting a map() to return a list in Python 3.x
I'm trying to map a list into hex, and then use the list elsewhere. In python 2.6, this was easy:
9 Answers
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Selecting with complex criteria from pandas.DataFrame
For example I have simple DF:
4 Answers
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Can the Unix list command 'ls' output numerical chmod permissions?
Is it possible when listing a directory to view numerical unix permissions such as 644 rather than the symbolic output -rw-rw-r--
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How to use shared memory with Linux in C
I have a bit of an issue with one of my projects.
5 Answers
5
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After array_filter(), how can I reset the keys to go in numerical order starting at 0
I just used array_filter to remove entries that had only the value '' from an array, and now I want to apply certain transformations on it depending on the placeholder starting from 0, but unfortunately it still retains the original index. I looked for a while and couldn't see anything, perhaps I j...
How to calculate a logistic sigmoid function in Python?
This is a logistic sigmoid function:
14 Answers
14
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Why is AJAX returning HTTP status code 0?
For some reason, while using AJAX (with my dashcode developed application) the browser just stops uploading and returns status codes of 0 . Why does this happen?
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